Elevator system with two cars and two counterweights
Patent Information
- Application Number
- EP2024709023
- Authority / Receiving Office
- EP · EP
- Patent Type
- Applications
- Current Assignee / Owner
- Priority Date
- 2023-03-08
- Filing Date
- 2024-03-01
- Publication Date
- 2026-01-14
AI Technical Summary
Elevator systems with two cars and counterweights require extensive installation space and are structurally complex due to separate guidance of counterweights on different walls, leading to increased component count and assembly complexity.
The elevator system features a vertically extending shaft with two cars and counterweights guided one above the other on a shared pair of guide rails, using suspension elements with contact points arranged diagonally to prevent interference and reduce the number of components, allowing for a simpler and more space-efficient design.
This configuration reduces the number of components, lowers assembly complexity, and optimizes space usage within the elevator shaft, making the system cheaper and easier to assemble while ensuring safe and efficient operation of the cars.
Smart Images
Figure EP2024055394_12092024_PF_FP_ABST
Abstract
Description
[0001] Elevator system with two cars and two counterweights
[0002] Technical area
[0003] The present invention relates to an elevator system for transporting persons and / or goods, comprising a vertically extending elevator shaft, a first elevator car movable along the elevator shaft, a second elevator car movable along the elevator shaft, a first counterweight connected to the first elevator car via a first support means, and a second counterweight connected to the second elevator car via a second support means.
[0004] Background of the invention
[0005] Elevator systems with multiple cars that can be moved and guided in the same elevator shaft are known from the prior art. Such elevator systems are marketed, for example, by the applicant under the name "TWIN," with the cars arranged one above the other. Such systems allow a single elevator shaft to be utilized more efficiently than a single-car system, thus reducing waiting times.
[0006] In elevator systems with both a single car and two cars that move independently of each other in an elevator shaft, it is common practice for the cars to be connected to a counterweight via suspension elements. In elevator systems with two cars, the two counterweights are usually mounted on separate walls of the elevator shaft, which requires the elevator shaft to provide sufficient space.
[0007] It is also known to mount multiple counterweights on the same wall of the elevator shaft, for example, side by side or, as known from EP 1 935 828 A1 or JP S 59153773 A, one above the other. However, these known solutions are structurally very complex and involve a large number of components that must be mounted in the elevator shaft with high positioning accuracy. Description of the invention
[0008] Based on the situation described above, it is an object of the present invention to propose a simplified elevator system with two elevator cars and counterweights assigned to the respective elevator cars.
[0009] The object of the invention is achieved by the features of the independent main claims. Advantageous embodiments are specified in the subclaims. To the extent technically feasible, the teachings of the subclaims can be combined arbitrarily with the teachings of the main and subclaims.
[0010] In particular, the object is accordingly achieved by an elevator system for transporting persons and / or goods, comprising a vertically extending elevator shaft, a first elevator car movable along the elevator shaft, a second elevator car movable along the elevator shaft, a first counterweight connected to the first elevator car via a first support means and a second counterweight connected to the second elevator car via a second support means, wherein the first counterweight and the second counterweight are guided one above the other in a first pair of guide rails, wherein the first counterweight is arranged above the second counterweight,wherein a first contact point of the second support means and a second contact point of the second support means are formed on the second counterweight, and wherein the first contact point is arranged in front of a plane spanned by the first pair of guide rails and the second contact point is arranged behind the plane spanned by the first pair of guide rails, and the contact points are opposite one another in a first diagonal direction.
[0011] Advantageous aspects of the claimed invention are explained below, and preferred modified embodiments of the invention are described further below. Explanations, in particular regarding advantages and definitions of features, are basically descriptive and preferred, but not limiting, examples. If an explanation is limiting, this will be expressly mentioned. If elements are designated by numbering, for example "first element", "second element" and "third element", this numbering is provided purely to differentiate the designation and does not represent any dependency of the elements on one another or a mandatory order of the elements. This means in particular that, for example, a device or a method does not have to have a "first element" in order to be able to have a "second element". The device or method can alsoThe method may include a "first element" and a "third element," but not necessarily a "second element." Multiple units of an element of a single numbering may also be provided, for example, multiple "first elements."
[0012] An elevator shaft of the elevator system extends at least partially in the vertical direction. The elevator shaft preferably has a clear cross-section that is essentially filled by a single elevator car, so that the two elevator cars cannot pass each other. The elevator cars are accordingly arranged one below or one above the other at all times. In particular, appropriate safety devices ensure that the elevator cars cannot collide with each other and are sufficiently spaced from each other at all times. The elevator shaft can also have an alternative position or parking position above an uppermost floor and / or below a lowest floor, into which the corresponding upper or lower elevator car can be moved in order to grant the other elevator car access to the uppermost or lowest floor.
[0013] A support means is designed, in particular, as a rope, belt, chain, or the like and carries tensile loads in the direction of its longitudinal extension. Preferably, several redundant support means can also be arranged in parallel, whereby in such an arrangement, all parallel support means are included in the term "support means" used here, or it may be clear from the context that only individual parallel support means are meant.
[0014] For example, a respective suspension element is attached to the elevator car at a first end, guided vertically to an associated drive in a machine room located at the head of the elevator shaft, where it is deflected and driven, then guided vertically to the associated counterweight and attached to the counterweight at a second end. This then represents a 1:1 suspension. An end attachment to the counterweight and / or the elevator car can be split between two contact points, or two parallel suspension elements can engage the counterweight at different contact points.
[0015] Alternatively, a respective support means is attached to a suspension in the machine room or the shaft head at a first end and from there guided vertically to the associated elevator car. There, the support means is deflected and in turn guided vertically to the associated drive in the machine room, where it is deflected and driven. From the drive, the support means then runs vertically to the associated counterweight, to which it is attached at a second end, or is deflected again and guided vertically to another shaft-side suspension. This then results in a 2:1 suspension. Other alternative suspension ratios are familiar to those skilled in the art and are implicitly included in the present description.
[0016] A counterweight is typically designed as a flat body, i.e., with the smallest possible depth, which is guided as close as possible to a wall of the elevator shaft on the first guide rails. This leaves the remaining cross-section of the elevator shaft free for the movement of the elevator cars, allowing the elevator cars to be designed with the largest possible footprint to accommodate as many people or bulky goods as possible. Counterweights are therefore designed with comparatively large dimensions in height and / or width, so that they achieve a mass that is comparable to or greater than the empty mass of the associated elevator car.The counterweight therefore extends essentially only in the plane spanned by the first pair of guide rails, with a small extent perpendicular to this plane, whereby the plane between the guide rails of the first pair of guide rails extends parallel to the wall of the elevator shaft. Insofar as a first contact point is arranged in front of the plane spanned by the first pair of guide rails and the second contact point behind it, these are also located in front of or behind the respective counterweight. A contact point is understood to be the point at which a substantially vertically running strand of the support means contacts the counterweight. This is in particular an attachment point of the support means on the counterweight, to which one end of the support means is firmly connected to the counterweight, or a contact point of the support means on a deflection pulley of the counterweight for deflecting the support means.
[0017] If the contact points are opposite each other in a diagonal direction, a direct connecting line between the contact points extends diagonally to the plane spanned by the first pair of guide rails. Diagonal is defined as an angular relationship greater than 0° and less than 90°. If two diagonal directions are oriented opposite to each other, the aforementioned angular relationship is plotted in different rotational directions from the plane spanned by the first pair of guide rails. The two oppositely oriented diagonal directions are then, for example, perpendicular or at an approximately perpendicular angle to each other.
[0018] The elevator system described above therefore includes the teaching that the first counterweight and the second counterweight are arranged or guided one above the other and in the same pair of guide rails, namely the first pair of guide rails. In this way, an additional pair of guide rails and the associated installation in the elevator shaft can be dispensed with, so that the elevator system has fewer components, is less expensive, and is also easier to install than elevator systems known from the prior art. The above-described arrangement of the contact points for the second support means on the second counterweight enables the second support means to run in front of and behind the first counterweight arranged above the second counterweight, and mutual interference between the first counterweight and the second support means is prevented.The second support element is guided vertically parallel to the wall directly next to the first counterweight and is thus arranged in a space-saving manner in the elevator shaft without obstructing other components of the elevator system. The teaching involves always providing two contact points for the first support element on the second counterweight. These are either two attachment points for parallel strands of a split second support element or an inlet point and an outlet point for one or more deflection pulleys at which a single second support element is deflected. With a split second support element, the parts of the second support element can each be driven by the same drive or by separate drives.
[0019] In one embodiment of the elevator system, the second support means is guided transversely on the second counterweight between the first contact point and the second contact point by means of at least one deflection pulley. This makes it possible to arrange the contact points in front of and behind the plane spanned by the first pair of guide rails in a suspension that requires deflection of the second support means on the second counterweight, and thus to guide the second support means at a sufficient distance from the first counterweight. In particular, the transverse guidance is achieved by means of a pair of deflection pulleys. The at least one deflection pulley is arranged, for example, on a frame of the second counterweight.
[0020] The first support means can be suspended from the first counterweight at just a single contact point at its center of gravity, particularly with an E-suspension, and can then be guided vertically in the elevator shaft without risk of interference between the first support means and the second support means. In an alternative embodiment, a first contact point of the first support means and a second contact point of the first support means are formed on the first counterweight. The contact points can then likewise be positioned particularly favorably in the elevator shaft in order to avoid interference between the first support means and other components of the elevator system, in particular the second support means, particularly with a suspension ratio of 2:1 or higher.
[0021] In one embodiment, the first contact point and the second contact point of the first counterweight are arranged in the plane spanned by the first pair of guide rails. Alternatively, the first contact point of the first support means is arranged in front of the plane spanned by the first pair of guide rails, and the second contact point of the first support means is arranged behind the plane spanned by the first pair of guide rails, and the contact points are opposite one another in a second diagonal direction oriented opposite to the first diagonal direction. In both cases, the first support means can be guided vertically in the elevator shaft without obstructing the second support means.
[0022] Particularly preferably, in the first counterweight, the first support means is also guided transversely between the first contact point and the second contact point by means of at least one deflection pulley. As also essentially described above with regard to the second counterweight, this makes it possible to favorably position the contact points on the first counterweight, in particular in front of and behind the plane spanned by the first pair of guide rails, in a suspension that requires deflection of the first support means on the first counterweight. In particular, the transverse guidance takes place by means of a pair of deflection pulleys. The at least one deflection pulley is arranged, for example, on a frame of the first counterweight.
[0023] In a further embodiment of the elevator system, the first counterweight is further connected to the first car via a first lower cable, wherein a first contact point of the first lower cable and a second contact point of the first lower cable are formed on the first counterweight, and wherein the first contact point is arranged in front of the plane spanned by the first pair of guide rails and the second contact point is arranged behind the plane spanned by the first pair of guide rails, and the contact points lie opposite one another in a third diagonal direction oriented opposite to the first diagonal direction. The third diagonal direction can, for example, be parallel to the second diagonal direction, but can also deviate from the second diagonal direction. The first lower cable serves to keep the first support means under tension, in particular in cooperation with a cable tensioning device.The term "bottom rope" is to be understood to mean that, in addition to an actual rope, it can also refer to another support means, such as a belt, a chain, or the like. In particular, the first bottom rope corresponds in its nature to the first support means. The embodiment now includes the teaching that the first bottom rope, which must be guided past the second counterweight, is attached to the first counterweight in a manner corresponding to the way the second support means is attached to the second counterweight. The first bottom rope is therefore guided past the second counterweight in a simple manner, and any interference between the first bottom rope and the second counterweight is advantageously prevented.
[0024] The theory stipulates that there are always two contact points for the first bottom rope on the first counterweight. These are either two attachment points for a split first bottom rope formed from parallel strands, or an inlet point and an outlet point for one or more pulleys where a single first bottom rope is deflected.
[0025] In one embodiment, the first lower cable is guided transversely on the first counterweight between the first contact point and the second contact point by means of at least one deflection pulley. As also essentially described above with regard to the support means, this makes it possible to favorably position the contact points on the first counterweight, in particular in front of and behind the plane spanned by the first pair of guide rails, in a suspension that requires deflection of the first lower cable on the first counterweight. In particular, the transverse guidance is achieved by means of a pair of deflection pulleys. The at least one deflection pulley is arranged, for example, on a frame of the first counterweight.
[0026] In a further preferred embodiment, the second counterweight is further connected to the second elevator car via a second lower cable. The second lower cable can be suspended from the second counterweight at a single contact point, for example, at its center of gravity, and can then be guided vertically in the elevator shaft without risk of obstruction between the first lower cable and the second lower cable. In an alternative embodiment, a first contact point of the second lower cable and a second contact point of the second lower cable are formed on the second counterweight.
[0027] In an embodiment with two contact points for the second lower rope on the second counterweight, the first contact point and the second contact point are arranged, for example, in the plane spanned by the first pair of guide rails. Alternatively, the first contact point of the second lower rope is arranged in front of the plane spanned by the first pair of guide rails and the second contact point of the second lower rope is arranged behind the plane spanned by the first pair of guide rails, and the contact points lie opposite one another in a fourth diagonal direction oriented opposite to the third diagonal direction. The contact points for the second lower rope on the second counterweight can then likewise be positioned particularly favorably in the elevator shaft in order to avoid, for example, an obstruction between the second lower rope and other components of the elevator system, in particular the first lower rope.The fourth diagonal direction may, for example, be parallel to the first diagonal direction, but may also deviate from the first diagonal direction.
[0028] In a further embodiment of the elevator system, the second lower cable is guided transversely on the second counterweight between the first contact point and the second contact point by means of at least one deflection pulley. As also essentially described above with regard to the support means and the first lower cable, this makes it possible to favorably position the contact points on the second counterweight, in particular in front of and behind the plane spanned by the first pair of guide rails, in a suspension that requires deflection of the second lower cable on the second counterweight. In particular, the transverse guidance is achieved by means of a pair of deflection pulleys. The at least one deflection pulley is arranged, for example, on a frame of the second counterweight.
[0029] In a further embodiment, the elevator installation has at least one protective device for preventing contact between the first counterweight and the second counterweight. The protective device is designed, in particular, as a damper or a braking device and includes, for example, a proximity sensor. Furthermore, the protective device can also prevent contact between at least one counterweight and an end of the elevator shaft.
[0030] In a further embodiment of the elevator system, the first car and the second car are guided one above the other in a second pair of guide rails, with the first car located below the second car. The selected assignment of the lower car to the upper counterweight and vice versa has the advantage that, when the first car is in the lowest position in the elevator shaft, the first counterweight can be moved to the upper end of the elevator shaft. Furthermore, by assigning both cars to the same second pair of guide rails, an additional guide rail is avoided, so that the elevator system is designed with few components and is particularly simple.
[0031] Short description of the drawings
[0032] The invention will be explained in more detail below with reference to preferred embodiments and the accompanying drawings. The term "figure" is abbreviated to "Fig."
[0033] The drawings show
[0034] Fig. 1 is a schematic view of an elevator installation according to a preferred embodiment of the invention;
[0035] Fig. 2a is a schematic front view of the counterweights of an elevator installation according to a preferred embodiment of the invention;
[0036] Fig. 2b is a schematic top view of the counterweights of the elevator system according to Figure 2a;
[0037] Fig. 3a is a schematic front view of the counterweights of an elevator installation according to a preferred embodiment of the invention;
[0038] Fig. 3b is a schematic top view of the machine room and the counterweights of the elevator system according to Fig. 3a;
[0039] Fig. 3c is a schematic top view of the counterweights of the elevator system according to Figures 3a and 3b;
[0040] Fig. 4a is a schematic front view of the counterweights of an elevator installation according to a preferred embodiment of the invention;
[0041] Fig. 4b is a schematic top view of the machine room and the counterweights of the elevator system according to Fig. 4a; Fig. 4c is a schematic top view of the counterweights of the elevator system according to Figures 4a and 4b;
[0042] Fig. 5a is a schematic front view of the counterweights of an elevator installation according to a preferred embodiment of the invention;
[0043] Fig. 5b is a schematic top view of the machine room and the counterweights of the elevator system according to Fig. 5a; and
[0044] Fig. 5c is a schematic top view of the counterweights of the elevator system according to Figures 5a and 5b.
[0045] Detailed description of the drawings
[0046] The described embodiments are merely examples that can be modified and / or supplemented in a variety of ways within the scope of the claims. Each feature described for a specific embodiment can be used independently or in combination with other features in any other embodiment. Each feature described for an embodiment of a specific claim category can also be used correspondingly in an embodiment of a different claim category.
[0047] Figure 1 shows an elevator installation 100 in a first embodiment, viewed from the direction of a front wall. The elevator installation 100 has an elevator shaft 1 extending in a vertical direction V and having a first side wall 1.1, a second side wall 1.2, a rear wall 1.3, and the front wall (not shown). The elevator shaft 1 is closed off in the vertical direction V by a shaft pit 1.4 and a shaft head 1.5. A first elevator car 2.1 and a second elevator car 2.2 are arranged in the elevator shaft 1, with the first elevator car 2.1 being arranged below the second elevator car 2.2. Each elevator car 2.1, 2.2 has an access door 3.1, 3.2 and is held in a frame 4.1, 4.2. The frames 4.1, 4.2 each engage with guide means not shown in detail in guide rails 5.1, 5.2 of a second guide rail pair 5 and are guided along the second guide rail pair 5 in the elevator shaft 1.A machine room 6 is arranged above the elevator shaft 1. To move the elevator cars 2.1, 2.2 in the elevator shaft 1 in the vertical direction V, the elevator cars 2.1, 2.2 are driven by support means 7.1, 7.2. The first support means 7.1 is attached at a first end to the first elevator car 2.1 and runs from there in the vertical direction V upwards to the machine room 6. In the machine room 6, the first support means 7.1 is deflected and driven by a first drive 10.1 and then runs downwards in the vertical direction V to a first counterweight 11.1, which is guided on the first side wall 1.1 in a first pair of guide rails not shown in detail in Figure 1. The first elevator car 2.1 is therefore suspended in a 1:1 ratio.
[0048] The second support means 7.2 is fastened at a first end to a first suspension 8.1 arranged in the machine room 6. From the first suspension 8.1, the second support means 7.2 is guided downwards in the vertical direction V to the second car 2.2. Deflection pulleys 9.1, 9.2 are arranged on the second frame 4.2, wherein the second support means 7.2 coming from the first suspension 8.1 is deflected at the first deflection pulley 9.1 in the horizontal direction H and is guided transversely to the second deflection pulley 9.2. At the second deflection pulley 9.2, the second support means 7.2 is again deflected in the vertical direction V and guided to a second drive 10.2, by means of which it is deflected and driven. From the second drive 10.2, the second support means 7.2 is then guided downwards to a second counterweight 11.2, wherein the second counterweight 11.2 is guided on the first side wall 1.1 in the first pair of guide rails not shown in detail in Figure 1.At the second counterweight 11.2, the second support means 7.2 is deflected at a deflection pulley 12.1 and in turn guided upwards to a second suspension 8.2 arranged in the machine room 6, where it is attached. The second car 2.2 is thus suspended in a 2:1 ratio. The deflection pulley 12 is arranged on the second counterweight 11.2 such that a first contact point 13.1 is arranged in front of a plane E of the counterweights 11.1, 11.2 spanned by the first pair of guide rails, and a second contact point 13.2 is arranged behind it, i.e. between the first side wall 1.1 and the counterweights 11.1, 11.2. The second support means 7.2 is thus guided in front of and behind the first counterweight 11.1, as described in detail in several embodiments with reference to the following figures. Figures 2a and 2b show a schematic view of an embodiment of the suspension of the counterweights 11.1, 11.2, wherein Figure 2a shows a front view and Figure 2b a top view. As in the embodiment according to Figure 1, the counterweights 11.1, 11.2 are guided one above the other in a first guide rail pair 14 formed by the guide rails 14.1, 14.2, with the first counterweight 11.1 being arranged above the second counterweight 11.2. Deflection rollers 12.1, 12.2 are arranged on the second counterweight 11.2, the contact points 13.1, 13.2.
[0049] 13.2, wherein the contact points 13.1, 13.2 are opposite one another in a first diagonal direction D1; the second support means 7.2 is accordingly guided transversely between the deflection rollers 12.1, 12.2 in the first diagonal direction D1, so that the first contact point 13.1 lies in front of a plane E spanned by the first guide rail pair 14 and the second contact point 13.2 lies behind the plane E. At the first counterweight 11.1, the first support means 7.1 is deflected by a further deflection roller 15, wherein contact points 16.1, 16.2 formed by the deflection roller 15 lie in the plane E.
[0050] Figures 3a and 3b show schematic views corresponding to Figures 2a, 2b of a further embodiment of the suspension of the counterweights 11.1, 11.2, wherein Figure 3b further shows the machine room 6 with the drives 10.1,
[0051] 10.2 shows the elevator shaft 1 with the guide rails 5.1, 5.2 arranged therein, and Figure 3c additionally shows the counterweights 11.1, 11.2 individually in a top view. A repetitive explanation of previously described aspects of the figures is omitted.
[0052] In the embodiment according to Figures 3a to 3c, the second counterweight 11.2 has a deflection roller 12 for deflecting the second support means 7.2, wherein the deflection roller 12 forms a first contact point 13.1 in front of the plane E and a second contact point 13.2 behind the plane E. The first support means 7.1 is attached to the first counterweight 11.1 at its center of gravity.
[0053] The elevator system 1 according to Figures 3a to 3c further comprises a first
[0054] A lower rope 17.1 between the first car 2.1 and the first counterweight 11.1 and a second lower rope 17.2 between the second car 2.2 and the second counterweight 11.2. The first lower rope 17.1 is deflected on a deflection pulley 18 on the first counterweight 11.1 in accordance with the second support means 7.2, wherein the deflection pulley 18 forms a first contact point 19.1 for the first lower rope 17.1 in front of the plane E and a second contact point 19.2 for the first lower rope 17.1 behind the plane E. The deflection pulley 18 guides the first lower rope 17.1 between the contact points 19.1, 19.2 transversely in a third diagonal direction D.3, wherein the third diagonal direction D.3 is approximately perpendicular to the first diagonal direction D.1. The first lower rope 17.1 then runs in front of or behind the second counterweight 11.2 and continues away from the second support element 7.2. The second lower rope 17.2 is attached to the second counterweight 11.2 at its center of gravity.
[0055] The embodiment of the suspension of the counterweights 11.1, 11.2, furthermore schematically illustrated in Figures 4a to 4c, corresponds to the embodiment according to Figures 3a to 3c, whereby the first support means 7.1 is suspended from the first counterweight 11.1 on a deflection roller 15. The deflection roller 15 forms a first contact point 16.1 for the first support means 7.1 in front of the plane E and a second contact point 16.2 for the first support means 17.2 behind the plane E. The deflection roller 15 thus guides the first support means 7.1 between the
[0056] Contact points 16.1, 16.2 in a second diagonal direction D.2 transversely, wherein the second diagonal direction D.2 is approximately perpendicular to the first diagonal direction D.1. The first support element 7.1 runs apart from the second support element 7.2. The second diagonal direction D.2 is still parallel to the third diagonal direction D.3, so that the deflection pulley 15 overlaps the deflection pulley 18 in the top view.
[0057] The embodiment of the suspension of the counterweights 11.1, 11.2, further illustrated schematically in Figures 5a to 5c, corresponds to the embodiment according to Figures 3a to 3c, with the difference that the second support means 7.2 is formed from a first strand 20.1 and a second strand 20.2 running parallel to the first strand 20.1. The first strand 20.1 is directly attached to the second counterweight 11.2 at the first contact point 13.1, and the second strand 20.2 is directly attached to the second contact point 13.2. The contact points 13.1, 13.2 are formed by projections on the second counterweight 11.2. Furthermore, a drive 10.3 for the first strand 20.1 and a drive 10.4 for the second strand 20.2 are arranged in the machine room 6, which are operated in particular in parallel or synchronously with one another.
[0058] List of reference symbols
[0059] 1 elevator shaft
[0060] 1.1 first side wall of the elevator shaft
[0061] 1.2 second side wall of the elevator shaft
[0062] 1.3 Rear wall of the elevator shaft
[0063] 1.4 Shaft pit of the elevator shaft
[0064] 1.5 Shaft head of the elevator shaft
[0065] 2.1 first car
[0066] 2.2 second car
[0067] 3.1 Access door of the first car
[0068] 3.2 Access door of the second car
[0069] 4.1 Frame of the first car
[0070] 4.2 Frame of the second car
[0071] 5 second pair of guide rails
[0072] 5.1 Guide rail of the second pair of guide rails
[0073] 5.2 Guide rail of the second pair of guide rails
[0074] 6 Engine room
[0075] 7.1 first load-bearing element
[0076] 7.2 second load-bearing element
[0077] 8.1 First suspension of the second day average
[0078] 8.2 second suspension of the second day average
[0079] 9.1 Deflection pulley of the second car
[0080] 9.2 Deflection pulley of the second car
[0081] 10.1 Drive of the first suspension element
[0082] 10.2 Driving the second day mean
[0083] 10.3 Drive of the first strand of the second suspension element
[0084] 10.4 Drive of the second strand of the second suspension element
[0085] 11.1 first counterweight
[0086] 11.2 second counterweight
[0087] 12 Deflection pulley of the second support means on the second counterweight
[0088] 12.1 first pulley
[0089] 12.2 second pulley 13.1 first contact point of the second support element
[0090] 13.2 second contact point of the second support means
[0091] 14 first pair of guide rails
[0092] 14.1 Guide rail of the first pair of guide rails
[0093] 14.2 Guide rail of the first pair of guide rails
[0094] 15 Deflection pulley of the first support means on the first counterweight
[0095] 16.1 first contact point of the first support element
[0096] 16.2 second contact point of the first support means
[0097] 17.1 first bottom rope
[0098] 17.2 second bottom rope
[0099] 18 Deflection pulley of the first lower rope on the first counterweight
[0100] 19.1 first contact point of the first lower rope
[0101] 19.2 second contact point of the first lower rope
[0102] 20.1 first strand of the second support element
[0103] 20.2 second strand of the second support element
[0104] 100 elevator system
[0105] D. l first diagonal direction
[0106] D.2 second diagonal direction
[0107] D.3 third diagonal direction
[0108] E plane spanned by the first pair of guide rails
[0109] H horizontal direction
[0110] V vertical direction
Claims
Patent claims 1. An elevator system (100) for transporting persons and / or goods, comprising a vertically extending elevator shaft (1); a first elevator car (2.1) movable along the elevator shaft (1); a second elevator car (2.2) movable along the elevator shaft (1); a first counterweight (11.1) connected to the first elevator car (2.1) via a first support means (7.1); and a second counterweight (11.2) connected to the second elevator car (2.2) via a second support means (7.2); wherein the first counterweight (11.1) and the second counterweight (11.2) are guided one above the other in a first pair of guide rails (14); wherein the first counterweight (11.1) is arranged above the second counterweight (11.2); wherein a first contact point (13.1) of the second support means (7.2) and a second contact point (13.2) of the second support means (7.2) are formed on the second counterweight (11.2); and wherein the first contact point (13.1) is arranged in front of a plane (E) spanned by the first pair of guide rails (14) and the second contact point (13.2) is arranged behind the plane (E) spanned by the first pair of guide rails (14) and the contact points (13.1, 13.2) are opposite one another in a first diagonal direction (D. l).
2. Elevator installation (100) according to claim 1, wherein the second support means (7.2) is guided transversely on the second counterweight (11.2) between the first contact point (13.1) and the second contact point (13.2) by means of at least one deflection roller (12).
3. Elevator installation (100) according to claim 1 or 2, wherein a first contact point (16.1) of the first support means (7.1) and a second contact point (16.2) of the first support means (7.1) are formed on the first counterweight (11.1).
4. Elevator installation (100) according to claim 3, wherein the first contact point (16.1) and the second contact point (16.2) are arranged in the plane (E) spanned by the first pair of guide rails (14).
5. Elevator installation (100) according to claim 3, wherein the first contact point (16.1) is arranged in front of the plane (E) spanned by the first guide rail pair (14) and the second contact point (16.2) is arranged behind the plane (E) spanned by the first guide rail pair (14) and the contact points (16.1, 16.2) are opposite one another in a second diagonal direction (D.2) oriented opposite to the first diagonal direction (D.1).
6. Elevator installation (100) according to one of claims 3 to 5, wherein the first support means (7.1) is guided transversely on the first counterweight (11.1) between the first contact point (16.1) and the second contact point (16.2) by means of at least one deflection roller (15).
7. Elevator installation (100) according to one of the preceding claims, wherein the first counterweight (11.1) is further connected to the first car (2.1) via a first lower cable (17.1); wherein a first contact point (19.1) of the first lower cable (17.1) and a second contact point (19.2) of the first lower cable (17.1) are formed on the first counterweight (11.1); and wherein the first contact point (19.1) is arranged in front of the plane (E) spanned by the first guide rail pair (14) and the second contact point (19.2) is arranged behind the plane (E) spanned by the first guide rail pair (14), and the contact points (19.1, 19.2) are opposite one another in a third diagonal direction (D.3) oriented opposite to the first diagonal direction (D.1).
8. Elevator installation (100) according to claim 7, wherein the first lower rope (17.1) is guided transversely on the first counterweight (11.1) between the first contact point (19.1) and the second contact point (19.2) by means of at least one deflection roller (18).
9. Elevator installation (100) according to one of the preceding claims, wherein the second counterweight (11.2) is further connected to the second car (2.2) via a second lower cable (17.2).
10. Elevator installation (100) according to claim 9, wherein a first contact point of the second lower rope (17.2) and a second contact point of the second lower rope (17.2) are formed on the second counterweight (11.2).
11. Elevator installation (100) according to claim 10, wherein the first contact point and the second contact point are arranged in the plane (E) spanned by the first pair of guide rails (14).
12. Elevator installation (100) according to claim 10, wherein the first contact point is arranged in front of the plane (E) spanned by the first guide rail pair (14) and the second contact point is arranged behind the plane (E) spanned by the first guide rail pair (14), and the contact points are opposite one another in a fourth diagonal direction oriented opposite to the third diagonal direction (D.3).
13. Elevator installation (100) according to one of claims 10 to 12, wherein the second lower rope (17.2) is guided transversely on the second counterweight (11.2) between the first contact point and the second contact point by means of at least one deflection roller.
14. Elevator installation (100) according to one of the preceding claims, comprising at least one protective device for avoiding contact between the first counterweight (11.1) and the second counterweight (11.2).
15. Elevator installation (100) according to one of the preceding claims, wherein the first car (2.1) and the second car (2.2) are guided one above the other in a second pair of guide rails (5); and wherein the first car (2.1) is arranged below the second car (2.2).